Notes on Instrument Alignment - 2007 November

Processed data files can be found on sharp@kilauea:Runs/2007Nov/calibs/alignment/

SHARC-II alignment

aperture plate at nasmyth tube entrance
- By eye: ~ 1/2 pixel Up, 1/3 - 1/4 pixel Left
- File 040494 fit: 0.18 pixel Up, 0.12 pix Right (note L-R flip from twinkle chart to file is expected)
aperture plate at nasmyth tube exit
- By eye: 1/3 pixel Up, 1/3 - 1/4 pixel L
- File 040495 fit: 0.17 pixel Up, 0.03 pix Right
parallelism = 0.01 pixel U-D, 0.09 pixel L-R

SHARP alignment

aperture plate at nasmyth tube entrance
- By eye: V array ~ 3/4 pixel U, 0 pixel L; H array ~ 1 pixel U, 1/4 pixel L
- File 040497: V fit 0.80 pixel U, 0.05 pixel R; H array 1.00 pixel U, 0.13 pixel R,
- H-V alignment at entrance = 0.20 U-D, 0.08 L-R
aperture plate at nasmyth tube exit
- By eye: V array ~ 3/4 pixel U, 0 pixel L; H array ~ 3/4 pixel U, 1/3 pixel L
- File 040496: V fit 0.78 pixel U, 0.28 pixel R; H array 0.91 pixel U, 0.26 pixel R,
- H-V alignment at exit = 0.13 U-D, 0.02 L-R
parallelism: V-array = 0.02 pixel U-D, 0.23 pixel L-R; H-array = 0.09 U-D, 0.13 L-R